[UPDATE- As of 19 April 2017, Chrysalis Burst costs 6 instead of 4, and thumping costs 4 instead of 3 now, making the deck even harder to pilot]
Heyyyyyyyyyyyyyyyyyy~ It’s Sin here 
This time I’m here to share an original Vaath build I’ve came up with.
This deck goes by many names for its heavy reliance on the Rebirth mechanic, but Sealmar would be a more appropriate name for it since you win with-
That’s right, the Spirit of Valknu.
It is a 6 cost minion with identical stats to your general upon hatching from the seal.
Did you say identical?
Yes, the point of this deck is to ram this bad boy with batshit attack into your opponent’s jimjams so much that he’d stop playing the game right after.
“But Sin, a 4 mana 0/1? Isn’t that bad? There are so many ways to remove that! I’d rather play chrysalis burst over this garbage!”
Hey now, our deck also includes chrysalis burst too so don’t worry :’)
“…”
Have you guys forgotten this card exists?
Also, the SECOND effect of Egg Morph hatches any egg.
Egg minions gain Rush right after it’s hatched, so there won’t be any window for them to clear these eggs.
Sealmar used to be pretty bad, but expansions constantly improve the consistency and quality of OTK memes. Cards like Lavaslasher give you a solid body and a versatile Dancing Blades effect, while Ragebinder is a good 3 drop with Rebirth, AND has a bond effect that triggers off itself and lavaslasher to HEAL (talk about insane synergy!)
The game plan for this deck is to just survive early, which is pretty easy to manage since no one wants to go near an overloaded Vaath. Against generals that tend to play small creep to swarm you out, Plasma Storm is there as a 3 of so they can’t pull off anything.
There are also versatile lethal options like sending a Rebirth minion into their face and then hatching it immediately with your tools, effectively giving that minion Celerity.
Reasoning for some weird minions in this deck:
Kujatas in this deck ramps out your heavy minions faster early, but is a bad draw later on.
Lava lances denies early cheese plays while also being a cheap removal later on to fit into your curve.
Silhouette Tracers lets your run, chase or clear backrows with your overloaded attack.
Vanquisher gives you quite a bit of Provoke protection with Lavaslasher, Ragebinder and itself.
Tips:
Also a tip is to not prioritize keeping your combo cards, since you’re gonna draw them sooner or later. Only start keeping them at 7 mana and higher, or if the board state becomes stale. This deck excels in drawing out removals and removals cost resources and time. >:D
Because card draw is not this deck’s specialty, manage your cards wisely. Do not flood the board and never go below 3 cards in your hand.
This deck’s best at 8 and 9 mana, where Morin Khur, Valknu’s Seal, Chrysalis Burst, Egg Morph, and Thumping + Makantor becomes active.
Winrate and Matchups
Not enough sample size 
I need more people attempting this deck build.
Faie- You never get any minion to stick, but that’s alright. Her win condition is late in the game too, with little to no heal effects in her deck, so you’re gonna win with Valknu. Remove her Circulus on sight, either with a general hit or tiger. Otherwise, play removal bait until you can cast Plasma Storm.
Cassyva- Your minions are pretty high quality to be losing to her. Kelaino does nothing but delay the inevitable. If they play out Ooz t1, move near a mana tile while being out of range and play a 3 drop nearby.
Lilithe- Well… she can’t set up any board lol.
Argeon- Don’t get near him until you have enough mana and board. If you get provoke it’s over. Plasma storm is a keep.
Zir’an- Pretty difficult to play against her, Trinity Oath is a problem and she can heal her minions. If you can’t kill her minions in one go, you’re going to have a disadvantage.
Vaath- Player’s skill matchup
Starhorn- Keep Lava Lance, and your 3 drops. Ditch your combo & plasma storm, and pack removals.
Reva- Easy makantor and mid-range gameplay.
Zirix- If golem build, save Plasma Storms for Siroccos while waiting for your combo. Clear with your general.
If structure build, you have good minions and decent attack value to break the obelysks. You have a lightbender and thumping waves too.
Kaleos- Just don’t let any minion stick. Keep an Earth Sphere.
Sajj- If she’s playing little to no cards at 4 cards and above, it’s artisajj and you should be keeping your distance. Every health point counts. Use only minions until you can use the combo. She should have problems keeping up with the board. If it’s standard Sajj, it’s no different from gameplay against Zirix.
With that, have fun breaking them with a punch from Valknu xd GLHF~
I might remove the Kujatas for the golem cost reduction guy
